Owner's manual

Example 2. Restoring co nfiguration d a ta using SSSU on a Windows Hos t
If it is necessary to restore the storage system configuration, it can be done using the
1. Click Run on the Window Start m enu.
2. Enter cmd in the Open field to open the DOS Command Window.
3. Change to the directory (CD) in which you have installed SSSU. For example, C:> cd \SSSUDir
4. Enter SSSU to run the application.
5. Enter FILE <pathname\filename>,wherepathname identifies the location where the
configuration files are b e saved and filename is the name of the first configuration file. For example,
FILE c:\EVAConfig\LargeEVA_Step1A.txt
6. Repeat the preceding step for e ach configuration file.
Adding disk drives to the storage system
As your storage requirements grow, you may be adding disk drives to your storage system. Adding new
disk drives is the easiest way to incre ase the storage capacity of the storage system. Disk drives can be
added onli
ne without impacting storage system operation.
Guidelines for a dding disk drives
When adding new disk drives to the storage system, you should ensure that the disk drives are installed
in the correct positions to maintain availability. The disk drives should be distributed across the disk
enclosures to protect against the failure of a single disk enclosure.
Use the following guidelines when adding disk drives to your storage system:
• Install high performance and FATA disk drives in separate g roups. These different drive types must
be in separate disk groups. You m ay also want to consider separating different drive capacities
and spindle speeds into different groups.
• The disk drives should be distributed evenly across the disk enclosures. The number of d isks of
a given type in e ach enclosure should not differ by more than one. For example, no enclosure
should have t wo disks until all the other enclosures have at least one.
• Disk drives should be installed in vertical columns within the disk enclosures. Add drives vertically
in multiples of eight, completely filling columns if possible. Disk groups are more robust if filled
with the same number of disk drives in each enclosure. See Figure 7 for an example.
NOTE:
When adding multiple disk drives, add a disk and wait for its activity indicator (1) to stop flashing
(up to 90 seconds) before installing the next disk (see Figure 6). This procedure must be followed to
avoid unexpected EVA system behavior.
4000/6000/8000 Enterprise Virtual Array user guide
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